3 * Copyright (c) 2001-2003 The ffmpeg Project
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "bitstream.h"
23 #include "bytestream.h"
28 * First version by Francois Revol (revol@free.fr)
29 * Fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
30 * by Mike Melanson (melanson@pcisys.net)
31 * CD-ROM XA ADPCM codec by BERO
32 * EA ADPCM decoder by Robin Kay (komadori@myrealbox.com)
33 * THP ADPCM decoder by Marco Gerards (mgerards@xs4all.nl)
35 * Features and limitations:
37 * Reference documents:
38 * http://www.pcisys.net/~melanson/codecs/simpleaudio.html
39 * http://www.geocities.com/SiliconValley/8682/aud3.txt
40 * http://openquicktime.sourceforge.net/plugins.htm
41 * XAnim sources (xa_codec.c) http://www.rasnaimaging.com/people/lapus/download.html
42 * http://www.cs.ucla.edu/~leec/mediabench/applications.html
43 * SoX source code http://home.sprynet.com/~cbagwell/sox.html
46 * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html
47 * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html
48 * readstr http://www.geocities.co.jp/Playtown/2004/
53 #define CLAMP_TO_SHORT(value) \
56 else if (value < -32768) \
59 /* step_table[] and index_table[] are from the ADPCM reference source */
60 /* This is the index table: */
61 static const int index_table[16] = {
62 -1, -1, -1, -1, 2, 4, 6, 8,
63 -1, -1, -1, -1, 2, 4, 6, 8,
67 * This is the step table. Note that many programs use slight deviations from
68 * this table, but such deviations are negligible:
70 static const int step_table[89] = {
71 7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
72 19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
73 50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
74 130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
75 337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
76 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
77 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
78 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
79 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
82 /* These are for MS-ADPCM */
83 /* AdaptationTable[], AdaptCoeff1[], and AdaptCoeff2[] are from libsndfile */
84 static const int AdaptationTable[] = {
85 230, 230, 230, 230, 307, 409, 512, 614,
86 768, 614, 512, 409, 307, 230, 230, 230
89 static const int AdaptCoeff1[] = {
90 256, 512, 0, 192, 240, 460, 392
93 static const int AdaptCoeff2[] = {
94 0, -256, 0, 64, 0, -208, -232
97 /* These are for CD-ROM XA ADPCM */
98 static const int xa_adpcm_table[5][2] = {
106 static const int ea_adpcm_table[] = {
107 0, 240, 460, 392, 0, 0, -208, -220, 0, 1,
108 3, 4, 7, 8, 10, 11, 0, -1, -3, -4
111 static const int ct_adpcm_table[8] = {
112 0x00E6, 0x00E6, 0x00E6, 0x00E6,
113 0x0133, 0x0199, 0x0200, 0x0266
116 // padded to zero where table size is less then 16
117 static const int swf_index_tables[4][16] = {
119 /*3*/ { -1, -1, 2, 4 },
120 /*4*/ { -1, -1, -1, -1, 2, 4, 6, 8 },
121 /*5*/ { -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16 }
124 static const int yamaha_indexscale[] = {
125 230, 230, 230, 230, 307, 409, 512, 614,
126 230, 230, 230, 230, 307, 409, 512, 614
129 static const int yamaha_difflookup[] = {
130 1, 3, 5, 7, 9, 11, 13, 15,
131 -1, -3, -5, -7, -9, -11, -13, -15
136 typedef struct ADPCMChannelStatus {
138 short int step_index;
149 } ADPCMChannelStatus;
151 typedef struct ADPCMContext {
152 int channel; /* for stereo MOVs, decode left, then decode right, then tell it's decoded */
153 ADPCMChannelStatus status[2];
154 short sample_buffer[32]; /* hold left samples while waiting for right samples */
157 /* XXX: implement encoding */
159 #ifdef CONFIG_ENCODERS
160 static int adpcm_encode_init(AVCodecContext *avctx)
162 if (avctx->channels > 2)
163 return -1; /* only stereo or mono =) */
164 switch(avctx->codec->id) {
165 case CODEC_ID_ADPCM_IMA_QT:
166 av_log(avctx, AV_LOG_ERROR, "ADPCM: codec adpcm_ima_qt unsupported for encoding !\n");
167 avctx->frame_size = 64; /* XXX: can multiple of avctx->channels * 64 (left and right blocks are interleaved) */
170 case CODEC_ID_ADPCM_IMA_WAV:
171 avctx->frame_size = (BLKSIZE - 4 * avctx->channels) * 8 / (4 * avctx->channels) + 1; /* each 16 bits sample gives one nibble */
172 /* and we have 4 bytes per channel overhead */
173 avctx->block_align = BLKSIZE;
174 /* seems frame_size isn't taken into account... have to buffer the samples :-( */
176 case CODEC_ID_ADPCM_MS:
177 avctx->frame_size = (BLKSIZE - 7 * avctx->channels) * 2 / avctx->channels + 2; /* each 16 bits sample gives one nibble */
178 /* and we have 7 bytes per channel overhead */
179 avctx->block_align = BLKSIZE;
181 case CODEC_ID_ADPCM_YAMAHA:
182 avctx->frame_size = BLKSIZE * avctx->channels;
183 avctx->block_align = BLKSIZE;
185 case CODEC_ID_ADPCM_SWF:
186 if (avctx->sample_rate != 11025 &&
187 avctx->sample_rate != 22050 &&
188 avctx->sample_rate != 44100) {
189 av_log(avctx, AV_LOG_ERROR, "Sample rate must be 11025, 22050 or 44100\n");
192 avctx->frame_size = 512 * (avctx->sample_rate / 11025);
199 avctx->coded_frame= avcodec_alloc_frame();
200 avctx->coded_frame->key_frame= 1;
205 static int adpcm_encode_close(AVCodecContext *avctx)
207 av_freep(&avctx->coded_frame);
213 static inline unsigned char adpcm_ima_compress_sample(ADPCMChannelStatus *c, short sample)
215 int delta = sample - c->prev_sample;
216 int nibble = FFMIN(7, abs(delta)*4/step_table[c->step_index]) + (delta<0)*8;
217 c->prev_sample = c->prev_sample + ((step_table[c->step_index] * yamaha_difflookup[nibble]) / 8);
218 CLAMP_TO_SHORT(c->prev_sample);
219 c->step_index = av_clip(c->step_index + index_table[nibble], 0, 88);
223 static inline unsigned char adpcm_ms_compress_sample(ADPCMChannelStatus *c, short sample)
225 int predictor, nibble, bias;
227 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 256;
229 nibble= sample - predictor;
230 if(nibble>=0) bias= c->idelta/2;
231 else bias=-c->idelta/2;
233 nibble= (nibble + bias) / c->idelta;
234 nibble= av_clip(nibble, -8, 7)&0x0F;
236 predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
237 CLAMP_TO_SHORT(predictor);
239 c->sample2 = c->sample1;
240 c->sample1 = predictor;
242 c->idelta = (AdaptationTable[(int)nibble] * c->idelta) >> 8;
243 if (c->idelta < 16) c->idelta = 16;
248 static inline unsigned char adpcm_yamaha_compress_sample(ADPCMChannelStatus *c, short sample)
257 delta = sample - c->predictor;
259 nibble = FFMIN(7, abs(delta)*4/c->step) + (delta<0)*8;
261 c->predictor = c->predictor + ((c->step * yamaha_difflookup[nibble]) / 8);
262 CLAMP_TO_SHORT(c->predictor);
263 c->step = (c->step * yamaha_indexscale[nibble]) >> 8;
264 c->step = av_clip(c->step, 127, 24567);
269 typedef struct TrellisPath {
274 typedef struct TrellisNode {
282 static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
283 uint8_t *dst, ADPCMChannelStatus *c, int n)
285 #define FREEZE_INTERVAL 128
286 //FIXME 6% faster if frontier is a compile-time constant
287 const int frontier = 1 << avctx->trellis;
288 const int stride = avctx->channels;
289 const int version = avctx->codec->id;
290 const int max_paths = frontier*FREEZE_INTERVAL;
291 TrellisPath paths[max_paths], *p;
292 TrellisNode node_buf[2][frontier];
293 TrellisNode *nodep_buf[2][frontier];
294 TrellisNode **nodes = nodep_buf[0]; // nodes[] is always sorted by .ssd
295 TrellisNode **nodes_next = nodep_buf[1];
296 int pathn = 0, froze = -1, i, j, k;
298 assert(!(max_paths&(max_paths-1)));
300 memset(nodep_buf, 0, sizeof(nodep_buf));
301 nodes[0] = &node_buf[1][0];
304 nodes[0]->step = c->step_index;
305 nodes[0]->sample1 = c->sample1;
306 nodes[0]->sample2 = c->sample2;
307 if(version == CODEC_ID_ADPCM_IMA_WAV)
308 nodes[0]->sample1 = c->prev_sample;
309 if(version == CODEC_ID_ADPCM_MS)
310 nodes[0]->step = c->idelta;
311 if(version == CODEC_ID_ADPCM_YAMAHA) {
313 nodes[0]->step = 127;
314 nodes[0]->sample1 = 0;
316 nodes[0]->step = c->step;
317 nodes[0]->sample1 = c->predictor;
322 TrellisNode *t = node_buf[i&1];
324 int sample = samples[i*stride];
325 memset(nodes_next, 0, frontier*sizeof(TrellisNode*));
326 for(j=0; j<frontier && nodes[j]; j++) {
327 // higher j have higher ssd already, so they're unlikely to use a suboptimal next sample too
328 const int range = (j < frontier/2) ? 1 : 0;
329 const int step = nodes[j]->step;
331 if(version == CODEC_ID_ADPCM_MS) {
332 const int predictor = ((nodes[j]->sample1 * c->coeff1) + (nodes[j]->sample2 * c->coeff2)) / 256;
333 const int div = (sample - predictor) / step;
334 const int nmin = av_clip(div-range, -8, 6);
335 const int nmax = av_clip(div+range, -7, 7);
336 for(nidx=nmin; nidx<=nmax; nidx++) {
337 const int nibble = nidx & 0xf;
338 int dec_sample = predictor + nidx * step;
339 #define STORE_NODE(NAME, STEP_INDEX)\
342 CLAMP_TO_SHORT(dec_sample);\
343 d = sample - dec_sample;\
344 ssd = nodes[j]->ssd + d*d;\
345 if(nodes_next[frontier-1] && ssd >= nodes_next[frontier-1]->ssd)\
347 /* Collapse any two states with the same previous sample value. \
348 * One could also distinguish states by step and by 2nd to last
349 * sample, but the effects of that are negligible. */\
350 for(k=0; k<frontier && nodes_next[k]; k++) {\
351 if(dec_sample == nodes_next[k]->sample1) {\
352 assert(ssd >= nodes_next[k]->ssd);\
356 for(k=0; k<frontier; k++) {\
357 if(!nodes_next[k] || ssd < nodes_next[k]->ssd) {\
358 TrellisNode *u = nodes_next[frontier-1];\
360 assert(pathn < max_paths);\
365 u->step = STEP_INDEX;\
366 u->sample2 = nodes[j]->sample1;\
367 u->sample1 = dec_sample;\
368 paths[u->path].nibble = nibble;\
369 paths[u->path].prev = nodes[j]->path;\
370 memmove(&nodes_next[k+1], &nodes_next[k], (frontier-k-1)*sizeof(TrellisNode*));\
376 STORE_NODE(ms, FFMAX(16, (AdaptationTable[nibble] * step) >> 8));
378 } else if(version == CODEC_ID_ADPCM_IMA_WAV) {
379 #define LOOP_NODES(NAME, STEP_TABLE, STEP_INDEX)\
380 const int predictor = nodes[j]->sample1;\
381 const int div = (sample - predictor) * 4 / STEP_TABLE;\
382 int nmin = av_clip(div-range, -7, 6);\
383 int nmax = av_clip(div+range, -6, 7);\
384 if(nmin<=0) nmin--; /* distinguish -0 from +0 */\
386 for(nidx=nmin; nidx<=nmax; nidx++) {\
387 const int nibble = nidx<0 ? 7-nidx : nidx;\
388 int dec_sample = predictor + (STEP_TABLE * yamaha_difflookup[nibble]) / 8;\
389 STORE_NODE(NAME, STEP_INDEX);\
391 LOOP_NODES(ima, step_table[step], av_clip(step + index_table[nibble], 0, 88));
392 } else { //CODEC_ID_ADPCM_YAMAHA
393 LOOP_NODES(yamaha, step, av_clip((step * yamaha_indexscale[nibble]) >> 8, 127, 24567));
404 if(nodes[0]->ssd > (1<<28)) {
405 for(j=1; j<frontier && nodes[j]; j++)
406 nodes[j]->ssd -= nodes[0]->ssd;
410 // merge old paths to save memory
411 if(i == froze + FREEZE_INTERVAL) {
412 p = &paths[nodes[0]->path];
413 for(k=i; k>froze; k--) {
419 // other nodes might use paths that don't coincide with the frozen one.
420 // checking which nodes do so is too slow, so just kill them all.
421 // this also slightly improves quality, but I don't know why.
422 memset(nodes+1, 0, (frontier-1)*sizeof(TrellisNode*));
426 p = &paths[nodes[0]->path];
427 for(i=n-1; i>froze; i--) {
432 c->predictor = nodes[0]->sample1;
433 c->sample1 = nodes[0]->sample1;
434 c->sample2 = nodes[0]->sample2;
435 c->step_index = nodes[0]->step;
436 c->step = nodes[0]->step;
437 c->idelta = nodes[0]->step;
440 static int adpcm_encode_frame(AVCodecContext *avctx,
441 unsigned char *frame, int buf_size, void *data)
446 ADPCMContext *c = avctx->priv_data;
449 samples = (short *)data;
450 st= avctx->channels == 2;
451 /* n = (BLKSIZE - 4 * avctx->channels) / (2 * 8 * avctx->channels); */
453 switch(avctx->codec->id) {
454 case CODEC_ID_ADPCM_IMA_QT: /* XXX: can't test until we get .mov writer */
456 case CODEC_ID_ADPCM_IMA_WAV:
457 n = avctx->frame_size / 8;
458 c->status[0].prev_sample = (signed short)samples[0]; /* XXX */
459 /* c->status[0].step_index = 0; *//* XXX: not sure how to init the state machine */
460 bytestream_put_le16(&dst, c->status[0].prev_sample);
461 *dst++ = (unsigned char)c->status[0].step_index;
462 *dst++ = 0; /* unknown */
464 if (avctx->channels == 2) {
465 c->status[1].prev_sample = (signed short)samples[1];
466 /* c->status[1].step_index = 0; */
467 bytestream_put_le16(&dst, c->status[1].prev_sample);
468 *dst++ = (unsigned char)c->status[1].step_index;
473 /* stereo: 4 bytes (8 samples) for left, 4 bytes for right, 4 bytes left, ... */
474 if(avctx->trellis > 0) {
476 adpcm_compress_trellis(avctx, samples, buf[0], &c->status[0], n*8);
477 if(avctx->channels == 2)
478 adpcm_compress_trellis(avctx, samples+1, buf[1], &c->status[1], n*8);
480 *dst++ = buf[0][8*i+0] | (buf[0][8*i+1] << 4);
481 *dst++ = buf[0][8*i+2] | (buf[0][8*i+3] << 4);
482 *dst++ = buf[0][8*i+4] | (buf[0][8*i+5] << 4);
483 *dst++ = buf[0][8*i+6] | (buf[0][8*i+7] << 4);
484 if (avctx->channels == 2) {
485 *dst++ = buf[1][8*i+0] | (buf[1][8*i+1] << 4);
486 *dst++ = buf[1][8*i+2] | (buf[1][8*i+3] << 4);
487 *dst++ = buf[1][8*i+4] | (buf[1][8*i+5] << 4);
488 *dst++ = buf[1][8*i+6] | (buf[1][8*i+7] << 4);
493 *dst = adpcm_ima_compress_sample(&c->status[0], samples[0]) & 0x0F;
494 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels]) << 4) & 0xF0;
496 *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 2]) & 0x0F;
497 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 3]) << 4) & 0xF0;
499 *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 4]) & 0x0F;
500 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 5]) << 4) & 0xF0;
502 *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 6]) & 0x0F;
503 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 7]) << 4) & 0xF0;
506 if (avctx->channels == 2) {
507 *dst = adpcm_ima_compress_sample(&c->status[1], samples[1]);
508 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[3]) << 4;
510 *dst = adpcm_ima_compress_sample(&c->status[1], samples[5]);
511 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[7]) << 4;
513 *dst = adpcm_ima_compress_sample(&c->status[1], samples[9]);
514 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[11]) << 4;
516 *dst = adpcm_ima_compress_sample(&c->status[1], samples[13]);
517 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[15]) << 4;
520 samples += 8 * avctx->channels;
523 case CODEC_ID_ADPCM_SWF:
527 init_put_bits(&pb, dst, buf_size*8);
529 //Store AdpcmCodeSize
530 put_bits(&pb, 2, 2); //Set 4bits flash adpcm format
532 //Init the encoder state
533 for(i=0; i<avctx->channels; i++){
534 put_bits(&pb, 16, samples[i] & 0xFFFF);
535 put_bits(&pb, 6, c->status[i].step_index & 0x3F);
536 c->status[i].prev_sample = (signed short)samples[i];
539 for (i=0; i<avctx->frame_size; i++) {
540 put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels*i]) & 0xF);
541 if (avctx->channels == 2)
542 put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[1], samples[2*i+1]) & 0xF);
545 dst += put_bits_count(&pb)>>3;
548 case CODEC_ID_ADPCM_MS:
549 for(i=0; i<avctx->channels; i++){
553 c->status[i].coeff1 = AdaptCoeff1[predictor];
554 c->status[i].coeff2 = AdaptCoeff2[predictor];
556 for(i=0; i<avctx->channels; i++){
557 if (c->status[i].idelta < 16)
558 c->status[i].idelta = 16;
560 bytestream_put_le16(&dst, c->status[i].idelta);
562 for(i=0; i<avctx->channels; i++){
563 c->status[i].sample1= *samples++;
565 bytestream_put_le16(&dst, c->status[i].sample1);
567 for(i=0; i<avctx->channels; i++){
568 c->status[i].sample2= *samples++;
570 bytestream_put_le16(&dst, c->status[i].sample2);
573 if(avctx->trellis > 0) {
574 int n = avctx->block_align - 7*avctx->channels;
576 if(avctx->channels == 1) {
578 adpcm_compress_trellis(avctx, samples, buf[0], &c->status[0], n);
580 *dst++ = (buf[0][i] << 4) | buf[0][i+1];
582 adpcm_compress_trellis(avctx, samples, buf[0], &c->status[0], n);
583 adpcm_compress_trellis(avctx, samples+1, buf[1], &c->status[1], n);
585 *dst++ = (buf[0][i] << 4) | buf[1][i];
588 for(i=7*avctx->channels; i<avctx->block_align; i++) {
590 nibble = adpcm_ms_compress_sample(&c->status[ 0], *samples++)<<4;
591 nibble|= adpcm_ms_compress_sample(&c->status[st], *samples++);
595 case CODEC_ID_ADPCM_YAMAHA:
596 n = avctx->frame_size / 2;
597 if(avctx->trellis > 0) {
600 if(avctx->channels == 1) {
601 adpcm_compress_trellis(avctx, samples, buf[0], &c->status[0], n);
603 *dst++ = buf[0][i] | (buf[0][i+1] << 4);
605 adpcm_compress_trellis(avctx, samples, buf[0], &c->status[0], n);
606 adpcm_compress_trellis(avctx, samples+1, buf[1], &c->status[1], n);
608 *dst++ = buf[0][i] | (buf[1][i] << 4);
612 for(i = 0; i < avctx->channels; i++) {
614 nibble = adpcm_yamaha_compress_sample(&c->status[i], samples[i]);
615 nibble |= adpcm_yamaha_compress_sample(&c->status[i], samples[i+avctx->channels]) << 4;
618 samples += 2 * avctx->channels;
626 #endif //CONFIG_ENCODERS
628 static int adpcm_decode_init(AVCodecContext * avctx)
630 ADPCMContext *c = avctx->priv_data;
632 if(avctx->channels > 2U){
637 c->status[0].predictor = c->status[1].predictor = 0;
638 c->status[0].step_index = c->status[1].step_index = 0;
639 c->status[0].step = c->status[1].step = 0;
641 switch(avctx->codec->id) {
642 case CODEC_ID_ADPCM_CT:
643 c->status[0].step = c->status[1].step = 511;
645 case CODEC_ID_ADPCM_IMA_WS:
646 if (avctx->extradata && avctx->extradata_size == 2 * 4) {
647 c->status[0].predictor = AV_RL32(avctx->extradata);
648 c->status[1].predictor = AV_RL32(avctx->extradata + 4);
657 static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble, int shift)
661 int sign, delta, diff, step;
663 step = step_table[c->step_index];
664 step_index = c->step_index + index_table[(unsigned)nibble];
665 if (step_index < 0) step_index = 0;
666 else if (step_index > 88) step_index = 88;
670 /* perform direct multiplication instead of series of jumps proposed by
671 * the reference ADPCM implementation since modern CPUs can do the mults
673 diff = ((2 * delta + 1) * step) >> shift;
674 predictor = c->predictor;
675 if (sign) predictor -= diff;
676 else predictor += diff;
678 CLAMP_TO_SHORT(predictor);
679 c->predictor = predictor;
680 c->step_index = step_index;
682 return (short)predictor;
685 static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, char nibble)
689 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 256;
690 predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
691 CLAMP_TO_SHORT(predictor);
693 c->sample2 = c->sample1;
694 c->sample1 = predictor;
695 c->idelta = (AdaptationTable[(int)nibble] * c->idelta) >> 8;
696 if (c->idelta < 16) c->idelta = 16;
698 return (short)predictor;
701 static inline short adpcm_ct_expand_nibble(ADPCMChannelStatus *c, char nibble)
704 int sign, delta, diff;
709 /* perform direct multiplication instead of series of jumps proposed by
710 * the reference ADPCM implementation since modern CPUs can do the mults
712 diff = ((2 * delta + 1) * c->step) >> 3;
713 predictor = c->predictor;
714 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
716 predictor = ((predictor * 254) >> 8) - diff;
718 predictor = ((predictor * 254) >> 8) + diff;
719 /* calculate new step and clamp it to range 511..32767 */
720 new_step = (ct_adpcm_table[nibble & 7] * c->step) >> 8;
727 CLAMP_TO_SHORT(predictor);
728 c->predictor = predictor;
729 return (short)predictor;
732 static inline short adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, char nibble, int size, int shift)
734 int sign, delta, diff;
736 sign = nibble & (1<<(size-1));
737 delta = nibble & ((1<<(size-1))-1);
738 diff = delta << (7 + c->step + shift);
741 c->predictor -= diff;
743 c->predictor += diff;
746 if (c->predictor > 16256)
747 c->predictor = 16256;
748 else if (c->predictor < -16384)
749 c->predictor = -16384;
751 /* calculate new step */
752 if (delta >= (2*size - 3) && c->step < 3)
754 else if (delta == 0 && c->step > 0)
757 return (short) c->predictor;
760 static inline short adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, unsigned char nibble)
767 c->predictor += (c->step * yamaha_difflookup[nibble]) / 8;
768 CLAMP_TO_SHORT(c->predictor);
769 c->step = (c->step * yamaha_indexscale[nibble]) >> 8;
770 c->step = av_clip(c->step, 127, 24567);
774 static void xa_decode(short *out, const unsigned char *in,
775 ADPCMChannelStatus *left, ADPCMChannelStatus *right, int inc)
778 int shift,filter,f0,f1;
784 shift = 12 - (in[4+i*2] & 15);
785 filter = in[4+i*2] >> 4;
786 f0 = xa_adpcm_table[filter][0];
787 f1 = xa_adpcm_table[filter][1];
795 t = (signed char)(d<<4)>>4;
796 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
804 if (inc==2) { /* stereo */
807 s_1 = right->sample1;
808 s_2 = right->sample2;
809 out = out + 1 - 28*2;
812 shift = 12 - (in[5+i*2] & 15);
813 filter = in[5+i*2] >> 4;
815 f0 = xa_adpcm_table[filter][0];
816 f1 = xa_adpcm_table[filter][1];
821 t = (signed char)d >> 4;
822 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
830 if (inc==2) { /* stereo */
831 right->sample1 = s_1;
832 right->sample2 = s_2;
842 /* DK3 ADPCM support macro */
843 #define DK3_GET_NEXT_NIBBLE() \
844 if (decode_top_nibble_next) \
846 nibble = (last_byte >> 4) & 0x0F; \
847 decode_top_nibble_next = 0; \
851 last_byte = *src++; \
852 if (src >= buf + buf_size) break; \
853 nibble = last_byte & 0x0F; \
854 decode_top_nibble_next = 1; \
857 static int adpcm_decode_frame(AVCodecContext *avctx,
858 void *data, int *data_size,
859 uint8_t *buf, int buf_size)
861 ADPCMContext *c = avctx->priv_data;
862 ADPCMChannelStatus *cs;
863 int n, m, channel, i;
864 int block_predictor[2];
870 /* DK3 ADPCM accounting variables */
871 unsigned char last_byte = 0;
872 unsigned char nibble;
873 int decode_top_nibble_next = 0;
876 /* EA ADPCM state variables */
877 uint32_t samples_in_chunk;
878 int32_t previous_left_sample, previous_right_sample;
879 int32_t current_left_sample, current_right_sample;
880 int32_t next_left_sample, next_right_sample;
881 int32_t coeff1l, coeff2l, coeff1r, coeff2r;
882 uint8_t shift_left, shift_right;
888 //should protect all 4bit ADPCM variants
889 //8 is needed for CODEC_ID_ADPCM_IMA_WAV with 2 channels
891 if(*data_size/4 < buf_size + 8)
895 samples_end= samples + *data_size/2;
899 st = avctx->channels == 2 ? 1 : 0;
901 switch(avctx->codec->id) {
902 case CODEC_ID_ADPCM_IMA_QT:
903 n = (buf_size - 2);/* >> 2*avctx->channels;*/
904 channel = c->channel;
905 cs = &(c->status[channel]);
906 /* (pppppp) (piiiiiii) */
908 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
909 cs->predictor = (*src++) << 8;
910 cs->predictor |= (*src & 0x80);
911 cs->predictor &= 0xFF80;
914 if(cs->predictor & 0x8000)
915 cs->predictor -= 0x10000;
917 CLAMP_TO_SHORT(cs->predictor);
919 cs->step_index = (*src++) & 0x7F;
921 if (cs->step_index > 88){
922 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n", cs->step_index);
926 cs->step = step_table[cs->step_index];
931 for(m=32; n>0 && m>0; n--, m--) { /* in QuickTime, IMA is encoded by chuncks of 34 bytes (=64 samples) */
932 *samples = adpcm_ima_expand_nibble(cs, src[0] & 0x0F, 3);
933 samples += avctx->channels;
934 *samples = adpcm_ima_expand_nibble(cs, (src[0] >> 4) & 0x0F, 3);
935 samples += avctx->channels;
939 if(st) { /* handle stereo interlacing */
940 c->channel = (channel + 1) % 2; /* we get one packet for left, then one for right data */
941 if(channel == 1) { /* wait for the other packet before outputing anything */
946 case CODEC_ID_ADPCM_IMA_WAV:
947 if (avctx->block_align != 0 && buf_size > avctx->block_align)
948 buf_size = avctx->block_align;
950 // samples_per_block= (block_align-4*chanels)*8 / (bits_per_sample * chanels) + 1;
952 for(i=0; i<avctx->channels; i++){
953 cs = &(c->status[i]);
954 cs->predictor = (int16_t)(src[0] + (src[1]<<8));
957 // XXX: is this correct ??: *samples++ = cs->predictor;
959 cs->step_index = *src++;
960 if (cs->step_index > 88){
961 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n", cs->step_index);
964 if (*src++) av_log(avctx, AV_LOG_ERROR, "unused byte should be null but is %d!!\n", src[-1]); /* unused */
967 while(src < buf + buf_size){
970 *samples++ = adpcm_ima_expand_nibble(&c->status[i], src[4*i] & 0x0F, 3);
972 *samples++ = adpcm_ima_expand_nibble(&c->status[i], src[4*i] >> 4 , 3);
978 case CODEC_ID_ADPCM_4XM:
979 cs = &(c->status[0]);
980 c->status[0].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2;
982 c->status[1].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2;
984 c->status[0].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2;
986 c->status[1].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2;
988 if (cs->step_index < 0) cs->step_index = 0;
989 if (cs->step_index > 88) cs->step_index = 88;
991 m= (buf_size - (src - buf))>>st;
993 *samples++ = adpcm_ima_expand_nibble(&c->status[0], src[i] & 0x0F, 4);
995 *samples++ = adpcm_ima_expand_nibble(&c->status[1], src[i+m] & 0x0F, 4);
996 *samples++ = adpcm_ima_expand_nibble(&c->status[0], src[i] >> 4, 4);
998 *samples++ = adpcm_ima_expand_nibble(&c->status[1], src[i+m] >> 4, 4);
1004 case CODEC_ID_ADPCM_MS:
1005 if (avctx->block_align != 0 && buf_size > avctx->block_align)
1006 buf_size = avctx->block_align;
1007 n = buf_size - 7 * avctx->channels;
1010 block_predictor[0] = av_clip(*src++, 0, 7);
1011 block_predictor[1] = 0;
1013 block_predictor[1] = av_clip(*src++, 0, 7);
1014 c->status[0].idelta = (int16_t)((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
1017 c->status[1].idelta = (int16_t)((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
1020 c->status[0].coeff1 = AdaptCoeff1[block_predictor[0]];
1021 c->status[0].coeff2 = AdaptCoeff2[block_predictor[0]];
1022 c->status[1].coeff1 = AdaptCoeff1[block_predictor[1]];
1023 c->status[1].coeff2 = AdaptCoeff2[block_predictor[1]];
1025 c->status[0].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
1027 if (st) c->status[1].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
1029 c->status[0].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
1031 if (st) c->status[1].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
1034 *samples++ = c->status[0].sample1;
1035 if (st) *samples++ = c->status[1].sample1;
1036 *samples++ = c->status[0].sample2;
1037 if (st) *samples++ = c->status[1].sample2;
1039 *samples++ = adpcm_ms_expand_nibble(&c->status[0], (src[0] >> 4) & 0x0F);
1040 *samples++ = adpcm_ms_expand_nibble(&c->status[st], src[0] & 0x0F);
1044 case CODEC_ID_ADPCM_IMA_DK4:
1045 if (avctx->block_align != 0 && buf_size > avctx->block_align)
1046 buf_size = avctx->block_align;
1048 c->status[0].predictor = (int16_t)(src[0] | (src[1] << 8));
1049 c->status[0].step_index = src[2];
1051 *samples++ = c->status[0].predictor;
1053 c->status[1].predictor = (int16_t)(src[0] | (src[1] << 8));
1054 c->status[1].step_index = src[2];
1056 *samples++ = c->status[1].predictor;
1058 while (src < buf + buf_size) {
1060 /* take care of the top nibble (always left or mono channel) */
1061 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1062 (src[0] >> 4) & 0x0F, 3);
1064 /* take care of the bottom nibble, which is right sample for
1065 * stereo, or another mono sample */
1067 *samples++ = adpcm_ima_expand_nibble(&c->status[1],
1070 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1076 case CODEC_ID_ADPCM_IMA_DK3:
1077 if (avctx->block_align != 0 && buf_size > avctx->block_align)
1078 buf_size = avctx->block_align;
1080 if(buf_size + 16 > (samples_end - samples)*3/8)
1083 c->status[0].predictor = (int16_t)(src[10] | (src[11] << 8));
1084 c->status[1].predictor = (int16_t)(src[12] | (src[13] << 8));
1085 c->status[0].step_index = src[14];
1086 c->status[1].step_index = src[15];
1087 /* sign extend the predictors */
1089 diff_channel = c->status[1].predictor;
1091 /* the DK3_GET_NEXT_NIBBLE macro issues the break statement when
1092 * the buffer is consumed */
1095 /* for this algorithm, c->status[0] is the sum channel and
1096 * c->status[1] is the diff channel */
1098 /* process the first predictor of the sum channel */
1099 DK3_GET_NEXT_NIBBLE();
1100 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1102 /* process the diff channel predictor */
1103 DK3_GET_NEXT_NIBBLE();
1104 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
1106 /* process the first pair of stereo PCM samples */
1107 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1108 *samples++ = c->status[0].predictor + c->status[1].predictor;
1109 *samples++ = c->status[0].predictor - c->status[1].predictor;
1111 /* process the second predictor of the sum channel */
1112 DK3_GET_NEXT_NIBBLE();
1113 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1115 /* process the second pair of stereo PCM samples */
1116 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1117 *samples++ = c->status[0].predictor + c->status[1].predictor;
1118 *samples++ = c->status[0].predictor - c->status[1].predictor;
1121 case CODEC_ID_ADPCM_IMA_WS:
1122 /* no per-block initialization; just start decoding the data */
1123 while (src < buf + buf_size) {
1126 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1127 (src[0] >> 4) & 0x0F, 3);
1128 *samples++ = adpcm_ima_expand_nibble(&c->status[1],
1131 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1132 (src[0] >> 4) & 0x0F, 3);
1133 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1140 case CODEC_ID_ADPCM_XA:
1141 c->status[0].sample1 = c->status[0].sample2 =
1142 c->status[1].sample1 = c->status[1].sample2 = 0;
1143 while (buf_size >= 128) {
1144 xa_decode(samples, src, &c->status[0], &c->status[1],
1151 case CODEC_ID_ADPCM_EA:
1152 samples_in_chunk = AV_RL32(src);
1153 if (samples_in_chunk >= ((buf_size - 12) * 2)) {
1158 current_left_sample = (int16_t)AV_RL16(src);
1160 previous_left_sample = (int16_t)AV_RL16(src);
1162 current_right_sample = (int16_t)AV_RL16(src);
1164 previous_right_sample = (int16_t)AV_RL16(src);
1167 for (count1 = 0; count1 < samples_in_chunk/28;count1++) {
1168 coeff1l = ea_adpcm_table[(*src >> 4) & 0x0F];
1169 coeff2l = ea_adpcm_table[((*src >> 4) & 0x0F) + 4];
1170 coeff1r = ea_adpcm_table[*src & 0x0F];
1171 coeff2r = ea_adpcm_table[(*src & 0x0F) + 4];
1174 shift_left = ((*src >> 4) & 0x0F) + 8;
1175 shift_right = (*src & 0x0F) + 8;
1178 for (count2 = 0; count2 < 28; count2++) {
1179 next_left_sample = (((*src & 0xF0) << 24) >> shift_left);
1180 next_right_sample = (((*src & 0x0F) << 28) >> shift_right);
1183 next_left_sample = (next_left_sample +
1184 (current_left_sample * coeff1l) +
1185 (previous_left_sample * coeff2l) + 0x80) >> 8;
1186 next_right_sample = (next_right_sample +
1187 (current_right_sample * coeff1r) +
1188 (previous_right_sample * coeff2r) + 0x80) >> 8;
1189 CLAMP_TO_SHORT(next_left_sample);
1190 CLAMP_TO_SHORT(next_right_sample);
1192 previous_left_sample = current_left_sample;
1193 current_left_sample = next_left_sample;
1194 previous_right_sample = current_right_sample;
1195 current_right_sample = next_right_sample;
1196 *samples++ = (unsigned short)current_left_sample;
1197 *samples++ = (unsigned short)current_right_sample;
1201 case CODEC_ID_ADPCM_IMA_SMJPEG:
1202 c->status[0].predictor = *src;
1204 c->status[0].step_index = *src++;
1205 src++; /* skip another byte before getting to the meat */
1206 while (src < buf + buf_size) {
1207 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1209 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
1210 (*src >> 4) & 0x0F, 3);
1214 case CODEC_ID_ADPCM_CT:
1215 while (src < buf + buf_size) {
1217 *samples++ = adpcm_ct_expand_nibble(&c->status[0],
1218 (src[0] >> 4) & 0x0F);
1219 *samples++ = adpcm_ct_expand_nibble(&c->status[1],
1222 *samples++ = adpcm_ct_expand_nibble(&c->status[0],
1223 (src[0] >> 4) & 0x0F);
1224 *samples++ = adpcm_ct_expand_nibble(&c->status[0],
1230 case CODEC_ID_ADPCM_SBPRO_4:
1231 case CODEC_ID_ADPCM_SBPRO_3:
1232 case CODEC_ID_ADPCM_SBPRO_2:
1233 if (!c->status[0].step_index) {
1234 /* the first byte is a raw sample */
1235 *samples++ = 128 * (*src++ - 0x80);
1237 *samples++ = 128 * (*src++ - 0x80);
1238 c->status[0].step_index = 1;
1240 if (avctx->codec->id == CODEC_ID_ADPCM_SBPRO_4) {
1241 while (src < buf + buf_size) {
1242 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1243 (src[0] >> 4) & 0x0F, 4, 0);
1244 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1245 src[0] & 0x0F, 4, 0);
1248 } else if (avctx->codec->id == CODEC_ID_ADPCM_SBPRO_3) {
1249 while (src < buf + buf_size && samples + 2 < samples_end) {
1250 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1251 (src[0] >> 5) & 0x07, 3, 0);
1252 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1253 (src[0] >> 2) & 0x07, 3, 0);
1254 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1255 src[0] & 0x03, 2, 0);
1259 while (src < buf + buf_size && samples + 3 < samples_end) {
1260 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1261 (src[0] >> 6) & 0x03, 2, 2);
1262 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1263 (src[0] >> 4) & 0x03, 2, 2);
1264 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1265 (src[0] >> 2) & 0x03, 2, 2);
1266 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1267 src[0] & 0x03, 2, 2);
1272 case CODEC_ID_ADPCM_SWF:
1276 int k0, signmask, nb_bits;
1277 int size = buf_size*8;
1279 init_get_bits(&gb, buf, size);
1281 //read bits & initial values
1282 nb_bits = get_bits(&gb, 2)+2;
1283 //av_log(NULL,AV_LOG_INFO,"nb_bits: %d\n", nb_bits);
1284 table = swf_index_tables[nb_bits-2];
1285 k0 = 1 << (nb_bits-2);
1286 signmask = 1 << (nb_bits-1);
1288 for (i = 0; i < avctx->channels; i++) {
1289 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
1290 c->status[i].step_index = get_bits(&gb, 6);
1293 while (get_bits_count(&gb) < size)
1297 for (i = 0; i < avctx->channels; i++) {
1298 // similar to IMA adpcm
1299 int delta = get_bits(&gb, nb_bits);
1300 int step = step_table[c->status[i].step_index];
1301 long vpdiff = 0; // vpdiff = (delta+0.5)*step/4
1312 if (delta & signmask)
1313 c->status[i].predictor -= vpdiff;
1315 c->status[i].predictor += vpdiff;
1317 c->status[i].step_index += table[delta & (~signmask)];
1319 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
1320 c->status[i].predictor = av_clip(c->status[i].predictor, -32768, 32767);
1322 *samples++ = c->status[i].predictor;
1323 if (samples >= samples_end) {
1324 av_log(avctx, AV_LOG_ERROR, "allocated output buffer is too small\n");
1332 case CODEC_ID_ADPCM_YAMAHA:
1333 while (src < buf + buf_size) {
1335 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0],
1337 *samples++ = adpcm_yamaha_expand_nibble(&c->status[1],
1338 (src[0] >> 4) & 0x0F);
1340 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0],
1342 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0],
1343 (src[0] >> 4) & 0x0F);
1348 case CODEC_ID_ADPCM_THP:
1351 unsigned int samplecnt;
1355 if (buf_size < 80) {
1356 av_log(avctx, AV_LOG_ERROR, "frame too small\n");
1361 samplecnt = bytestream_get_be32(&src);
1363 for (i = 0; i < 32; i++)
1364 table[0][i] = (int16_t)bytestream_get_be16(&src);
1366 /* Initialize the previous sample. */
1367 for (i = 0; i < 4; i++)
1368 prev[0][i] = (int16_t)bytestream_get_be16(&src);
1370 if (samplecnt >= (samples_end - samples) / (st + 1)) {
1371 av_log(avctx, AV_LOG_ERROR, "allocated output buffer is too small\n");
1375 for (ch = 0; ch <= st; ch++) {
1376 samples = (unsigned short *) data + ch;
1378 /* Read in every sample for this channel. */
1379 for (i = 0; i < samplecnt / 14; i++) {
1380 int index = (*src >> 4) & 7;
1381 unsigned int exp = 28 - (*src++ & 15);
1382 int factor1 = table[ch][index * 2];
1383 int factor2 = table[ch][index * 2 + 1];
1385 /* Decode 14 samples. */
1386 for (n = 0; n < 14; n++) {
1388 if(n&1) sampledat= *src++ <<28;
1389 else sampledat= (*src&0xF0)<<24;
1391 sampledat = ((prev[ch][0]*factor1
1392 + prev[ch][1]*factor2) >> 11) + (sampledat>>exp);
1393 CLAMP_TO_SHORT(sampledat);
1394 *samples = sampledat;
1395 prev[ch][1] = prev[ch][0];
1396 prev[ch][0] = *samples++;
1398 /* In case of stereo, skip one sample, this sample
1399 is for the other channel. */
1405 /* In the previous loop, in case stereo is used, samples is
1406 increased exactly one time too often. */
1414 *data_size = (uint8_t *)samples - (uint8_t *)data;
1420 #ifdef CONFIG_ENCODERS
1421 #define ADPCM_ENCODER(id,name) \
1422 AVCodec name ## _encoder = { \
1426 sizeof(ADPCMContext), \
1427 adpcm_encode_init, \
1428 adpcm_encode_frame, \
1429 adpcm_encode_close, \
1433 #define ADPCM_ENCODER(id,name)
1436 #ifdef CONFIG_DECODERS
1437 #define ADPCM_DECODER(id,name) \
1438 AVCodec name ## _decoder = { \
1442 sizeof(ADPCMContext), \
1443 adpcm_decode_init, \
1446 adpcm_decode_frame, \
1449 #define ADPCM_DECODER(id,name)
1452 #define ADPCM_CODEC(id, name) \
1453 ADPCM_ENCODER(id,name) ADPCM_DECODER(id,name)
1455 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1456 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1457 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
1458 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
1459 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
1460 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_SMJPEG, adpcm_ima_smjpeg);
1461 ADPCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1462 ADPCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
1463 ADPCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
1464 ADPCM_CODEC(CODEC_ID_ADPCM_EA, adpcm_ea);
1465 ADPCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
1466 ADPCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
1467 ADPCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
1468 ADPCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
1469 ADPCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
1470 ADPCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
1471 ADPCM_CODEC(CODEC_ID_ADPCM_THP, adpcm_thp);